Cryptolith Rite

Creatures you control have "{T}: Add one mana of any color."

Idyllic Tutor

Search your library for an enchantment card, reveal it, put it into your hand, then shuffle.

Ghave, Guru of Spores

Ghave, Guru of Spores enters with five +1/+1 counters on it.
{1}, Remove a +1/+1 counter from a creature you control: Create a 1/1 green Saproling creature token.
{1}, Sacrifice a creature: Put a +1/+1 counter on target creature.

Enlightened Tutor

Search your library for an artifact or enchantment card, reveal it, then shuffle and put that card on top.